Ribbon cartridge for a thermal-transfer printer



FIG. 1 is a front view of a ribbon cartridge for a thermal-transfer printer;

FIG. 2 is a rear view thereof:

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top perspective thereof. 

The ornamental design for a ribbon cartridge for a thermal-transfer printer, as shown and described. 